/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Selection/MeshTopologySelectionMechanic.h
Sets the base priority so that tools can make sure that their own behaviors are higher priority. The mechanic will not use any priority value higher than this, but it may use lower if it needs to stagger the priorities of behaviors it uses. Can be called before or afterSetup().
void SetBasePriority ( const [FInputCapturePriority](API\Runtime\InteractiveToolsFramework\FInputCapturePriority) & Priority )